1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_builtin_macros/src/assert/context.rs b/compiler/rustc_builtin_macros/src/assert/context.rs
index b619e80e15f..902c1e40c75 100644
--- a/compiler/rustc_builtin_macros/src/assert/context.rs
+++ b/compiler/rustc_builtin_macros/src/assert/context.rs
@@ -320,6 +320,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
             | ExprKind::Underscore
             | ExprKind::While(_, _, _)
             | ExprKind::Yeet(_)
+            | ExprKind::Become(_)
             | ExprKind::Yield(_) => {}
         }
     }